An apparatus for analyzing the performance of wheeled, land vehicle brake systems is described wherein means are provided for driving the vehicle wheels at a predetermined speed and the operator or computer controlled brake actuator selectively applies the brakes in a series of simple successive steps...http://www.google.com.hk/patents/US3995475?utm_source=gb-gplus-share專利 US3995475 - Computer type brake analyzer with automatically controlled brake actuator
